CIB UNIGAS - M039168CC
34
Cleaning and replacing the detection photocell
The photocell working life is about 10000 working hours (about 1 year), at max 50°C after which it must be replaced.
To clean/replace the detection photocell, proceed as follows:
1
Disconnect the system from the electrical power supply.
2
Shut off the gas supply
3
remove the photocell from its slot (see next figure);
4
clean the bulbe if dirty, taking care not to touch it with bare hands;
5
if necessary, replace the bulb;
6
replace the photocell into its slot.
Checking the detection current
To check the detection signal follow the scheme in Fig. 19.
If the signal is lower than the value quoted, check the position of the UV detector (photocell), the electrical contacts and, if necessary,
replace the UV detector.
Seasonal stop
To stop the burner in the seasonal stop, proceed as follows:
1
turn the burner’s main switch to 0 (Off position)
2
disconnect the power mains
3
close the fuel cock of the supply line
Burner disposal
In case of disposal, follow the instructions according to the laws in force in your country about the “Disposal of materials”.
Fig. 19: Detection by photocell QRA..
TERMINAL BOARD
MC
Control box
Minimum detection signal
Siemens LFL1.3..
70µA with UV detector)
